JPH10241790A - Fitting structure of connector housing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate plays at the time of fitting, while maintaining a certain level of fitting space by providing recessed and projecting parts engaged with each other in each sidewall of a pair of connector housings, forming the section of the projecting part to be trapezoidal in shape to be expanded to a tip side and matching the section of the recessed part with that of the projecting part. SOLUTION: A trapezoidal guide rib 9 is provided as a projecting part in the upper and lower middle part of the sidewall 13 of a male connector housing 1 along the insertion direction. A guide groove as a recessed part is provided in the vertically intermediate part of a side wall 13 opposite the fitting hood part of a female connector housing 3. The section of the trapezoidal guide rib 9 is formed to be trapezoidal, so as to be expanded to a tip 15 side, and a slope 17 symmetrical with respect to upper and lower sides is formed. The section of the guide groove is expanded to the deep side of the sidewall 13 and formed to be trapezoidal corresponding to the section of the guide rib 9, and a slope 19 which is symmetrical in upper and lower sides is formed. When the female and male connector housings are engaged with each other, the trapezoidal guide rib 9 is fitted from its tip in the guide groove.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fitting structure of a connector housing in which male and female are fitted.

[0002]

2. Description of the Related Art A conventional connector housing fitting structure is shown in FIGS.
4-53687).

FIG. 3 is a perspective view of a pair of connector housings of a male and female connector, and includes, for example, a male connector housing 1 and a female connector housing 3. For example, a female terminal (not shown) is accommodated in the male connector housing 1, and a male terminal (not shown) is accommodated in the female connector housing 3. The female connector housing 3 is provided with a fitting hood portion 5, and the male connector housing 1 is fitted into the fitting hood portion 5 to connect the female and male terminals.

On the side walls of the male connector housing 1 and the female connector housing 3, there are provided concave and convex portions 7, 9 which are fitted to each other at the time of regular fitting. The concave portion 7 is provided along the inner surface of the side wall 11 of the fitting hood portion 5 in the female connector housing 3, and the convex portion 9 projects from the outer surface of the side wall 13 of the male connector housing 1.
When the male connector housing 1 is fitted into the fitting hood portion 5 of the female connector housing 3, the concave portions 7
Are fitted, and mutual erroneous insertion can be prevented.

[0005]

By the way, when the male and female connector housings 3, 1 are fitted as described above, the erroneous insertion can be prevented by the uneven portions 7, 9;
9 (a). As shown in FIG.
1, S2 and H are generated. 4A shows a state in which the male connector housing 1 is shifted with respect to the female connector housing 3 and the mutual gap S2 is maximized. As described above, the gap at the time of fitting between the male and female connector housings 3 and 1 does not become zero, and there is a problem that the backlash is easily affected by vibration and the like.

In order to solve such a problem, it is conceivable that the fitting gap of the male connector housing 1 to the fitting hood portion 5 is reduced to the limit. This leads to the problem of becoming

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a fitting structure of a connector housing which can reduce looseness when fitting the two connector housings while maintaining a certain gap between the male and female connector housings. .

[0008]

According to a first aspect of the present invention, there is provided a pair of connector housings, each of which is male and female, in which respective side walls are provided with concavo-convex portions which are mated with each other at the time of regular mating. Formed in a trapezoidal shape that expands to the tip side of the convex section,
The cross section of the concave portion is formed in a trapezoidal shape having a size corresponding to the cross section of the convex portion which extends to the deep side of the cross section of the concave portion.

Therefore, since the cross section of the concave and convex portions which are fitted to each other at the time of regular fitting is trapezoidal, if the fitting of the pair of connector housings is relatively displaced due to vibration or the like, the trapezoidal convex portion becomes trapezoidal. , So that they can fit into each other so as to fit each other.

According to a second aspect of the present invention, there is provided the connector housing fitting structure according to the first aspect, wherein the trapezoidal shape of the cross section of the concave and convex portions is each symmetrical.

Therefore, in addition to the operation of the first aspect of the present invention, since the trapezoidal shape of the cross section of the concave and convex portions is symmetrical, it is easy to manufacture, and the both concave and convex portions can be easily brought into close contact with each other for backlash reduction.

According to a third aspect of the present invention, there is provided the connector housing fitting structure according to the first or second aspect, wherein a pair of the concave and convex portions is provided on each of the opposed side walls of each of the connector housings. It is characterized by.

Therefore, in addition to the function of the first or second aspect of the present invention, the pair of connector housings relatively move in any direction of the opposed side wall in each connector housing by the pair of uneven portions provided on the opposed side wall. Also, the looseness can be reduced by fitting the concave and convex portions in a trapezoidal shape.

According to a fourth aspect of the present invention, there is provided the connector housing fitting structure according to any one of the first to third aspects, wherein the protrusion is a trapezoidal guide rib formed along the one side wall. The recess is a guide groove formed along the other side wall.

Therefore, in addition to the effect of any one of the first to fourth aspects of the present invention, it is possible to guide the fitting by the concave and convex portions. In addition, the side walls of the connector housing can be reinforced by the uneven portions.

[0016]

FIG. 1 is a perspective view showing a fitting structure of a connector housing according to an embodiment of the present invention.
The components corresponding to those in FIG. 3 are denoted by the same reference numerals, and the description thereof will not be repeated.

In one embodiment of the present invention, trapezoidal guide ribs 9 which are generally convex portions are provided in the upper and lower middle portions of the side wall 13 of the male connector housing 1 along the insertion direction.
Although not shown in FIG. 1, the male connector housing 1 is provided with trapezoidal guide ribs 9 on both sides of the opposing left and right side walls.

The guide groove 7, which is a concave portion, is provided entirely in the upper and lower middle portions of the opposed side walls 13 of the fitting hood portion 5 of the female connector housing 3 along the fitting direction.

The cross sections of the guide groove 7 and the trapezoidal guide rib 9 are as shown in FIG. That is, the cross section of the trapezoidal guide rib 9 is formed in a trapezoidal shape that expands toward the distal end 15 of the cross section of the trapezoidal guide rib 9, and is vertically symmetrical. Therefore, a vertically symmetric slope 17 is formed.

The cross section of the guide groove 7 is formed in a trapezoidal shape having a size corresponding to the cross section of the trapezoidal guide rib 9 so as to expand toward the back side of the side wall 13 and has a vertically symmetric shape. Therefore, symmetrical slopes 19 are formed above and below the guide groove 7.

In FIG. 1, reference numeral 21 denotes a flexible lock arm, and reference numeral 23 denotes a lock projection.

When the male and female connector housings 3 and 1 are fitted, the trapezoidal guide rib 9 fits into the guide groove 7 from its tip. At the time of fitting, since the guide groove 7 and the trapezoidal guide rib 9 are formed along the side walls 11 and 13, it is possible to guide the fitting of the two. When the fitting is completed, such as at the time of regular fitting, the guide groove 7 and the trapezoidal guide rib 9 are fitted as shown in FIG. Also, at the time of regular fitting, the flexible lock arm 21 engages with the lock projection 23,
The engagement between the connector housings 1 and 3 is locked.

When the male and female connector housings 3 and 1 relatively vibrate in the left and right directions due to vibration or the like,
As shown in (b), the slope 17 of the trapezoidal guide rib 9 is in close contact with the slope 19 of the guide groove 7, and the play of both is automatically reduced, so that the play of fitting can be prevented. Therefore,
It is possible to suppress the play of the connection of the terminals due to vibration or the like and maintain a long and favorable connection state.

In the present embodiment, since the guide groove 7 and the trapezoidal guide rib 9 are provided in a pair on the opposing side walls 11 and 13, for example, the play can be reduced even when the guide member 7 is moved to the left or right. It is possible to reliably prevent the play against the vibration and to surely prevent the play of the connection of the terminal. In addition, since the trapezoidal shapes of the guide groove 7 and the trapezoidal guide rib 9 are symmetrical, it is easy to manufacture, and the upper and lower slopes 17, 19 can be surely brought into close contact with each other when the relative movement is made, so that rattling is reliably prevented. be able to.

Further, the guide groove 7 and the trapezoidal guide rib 9 are
Since the side walls 11 and 13 are formed long along the side walls 11 and 13, the side walls 11 and 13 can be reinforced.
It is also possible to make a lightweight connector housing by reducing the thickness of the connector housing.

By providing the guide groove 7 and the trapezoidal guide rib 9 on only one of the left and right side walls 11 and 13, it is possible to perform backlash similarly, and in this case, erroneous insertion is prevented. You can also plan.

[0027]

According to the first aspect of the present invention, it is possible to position the fitting of the pair of connector housings against vibration or the like by loosening by the uneven portion, and to fit the connector housing with little play against vibration. And adverse effects on terminal connection are suppressed.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, it is possible to more securely prevent the backlash by more surely filling the backlash and suppress the adverse effect on the terminal.

According to the third aspect of the present invention, in addition to the effects of the first or second aspect of the present invention, play can be reduced even when the pair of connector housings are moved, for example, to the left or right, so that more reliable play is achieved. The prevention can more reliably prevent the terminal from being adversely affected.

According to the fourth aspect of the present invention, in addition to the effects of any one of the first to fourth aspects, the fitting of the concave and convex portions can be performed in a long range, and the looseness can be more reliably prevented. . Further, by reinforcing the side wall with the uneven portion, the thickness of the side wall can be reduced, and a lightweight and inexpensive connector can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view according to an embodiment of the present invention.

FIGS. 2A and 2B are cross-sectional views showing a fitting state of the concave and convex portions according to the embodiment of the present invention, wherein FIG. 2A is a cross-sectional view before loosening and FIG.

FIG. 3 is a perspective view according to a conventional example.

4A and 4B show a fitting state of a concave and convex portion according to a conventional example, and FIG.
FIG. 3 is a cross-sectional view showing a state without offset, and FIG. 2B is a sectional view showing a state with offset.

[Explanation of symbols]

 Reference Signs List 1 male connector housing (connector housing) 3 female connector housing (connector housing) 7 guide groove (recess) 9 trapezoidal guide rib (convex) 11, 13 side wall 15 tip

Claims (4)

[Claims] 1. A trapezoidal shape in which, on each side wall of a pair of male and female mating connector housings, an uneven portion is provided which is fitted to each other at the time of regular fitting, and a cross section of the convex portion is enlarged to a tip side of the cross section of the convex portion. And a cross section of the concave portion is formed in a trapezoidal shape having a size corresponding to the cross section of the convex portion, which expands to a depth side of the cross section of the concave portion. 2. The fitting structure for a connector housing according to claim 1, wherein the trapezoidal shape of the cross section of the concave and convex portions is a symmetrical shape. 3. The connector housing fitting structure according to claim 1, wherein a pair of the concave and convex portions is provided on each of the opposed side walls of each of the connector housings. Housing fitting structure. 4. The connector housing fitting structure according to claim 1, wherein the convex portion is a trapezoidal guide rib formed along the one side wall, and the concave portion is the concave portion. A connector housing fitting structure, which is a guide groove formed along the other side wall.